Swap #6 plug with #2. See if 0306 goes to 0302. If not, swap the plug wires. Swap the DS knock sensor with the pass side. P1590 is an abs code, you need an abs code reader to read that. Try the icarsoft i930

 

I'm glad my suggestion to replace the O2 sensor helped. My mantra is generally "diagnose, diagnose, diagnose" but as I wrote, when I see multiple cylinder misfires on one bank I do jump to diagnosing a problem with the O2 sensor.

I am surprised the P1300 and P0300 codes are still present, even though you report a misfire code for cylinder 6 only. Did you clear the codes after installing the O2 sensor?

Re: the knock sensor code, but the knock sensor code should be last on your list of priorities. I may be wrong, but I don't believe it has any impact on how the engine runs in "normal" conditions. That said, reviewing the RAVE swapping the knock sensors seems pretty easy to do, so go ahead if you are motivated to do so. In my nearly 14 years on these and other LR forums I recall very little discussion of knock sensor codes. For the few I recall and have found, the fault was traced to a problem with the cable and not the sensor itself. And the knock sensor cable is coax, making repairs a little more challenging.

 

Update => Thanks to all for the help I've received with the codes I've posted! Found a melted/burnt Plug 6 cable. Ordered a set of plugs and wires. I have replaced all 8 spark plugs; however, I was only able to reach the top 4 wires on the backside of the engine. I watched some videos and they all instructed that I would have to remove the intake to get to the bottom 4. I chose not to do that because I did not have a replacement crush gasket to install once I would have removed the intake. Replaced the 4 wires I could get to. As it was, I had to remove a metal pipe from 1 side of the intake to the other in order to get my hands back there. I have not seen any videos with this particular pipe, by I've heard mention of a secondary air option? I'm presuming that is what it was. Fired up the Rover once I got it all back together, cleared the old codes and now I no longer have any misfire codes and the Rover sounds much better. Still pretty loud but I suspect I need to sink money into an exhaust next. I still have the knock sensor code; however, I'm thinking that might be bad gas? I also still have the code => 1590 regarding the 3 amigos. Rover's driving much better now and I'm pretty stoked. Thanks again!!

RoverFun13

 

Knock sensor code is not bad gas, you likely have a bad wire going to the sensor. You can swap sensors left and right to test. It is a highly sensitive sensor and they use a shielded cable, if you find the break in the cable you need to repair it so as to retain the shielding.

Regarding your plug wires, You might want to read this: https://extinctmotorsports.com/the-e...g-perspective/

 

Sweet! Thanks for the Link! I checked out that modification for the wire pack placement! Definitely what I'll be doing next time I have to do plugs and wires!